Double window



Patented Dec. 7, 1937 UNITED STATES DOUBLE WINDOW John K. Ames, Machias, Maine, assignor to Burrowes Corporation, Portland, Maine, at corporation of Maine Application August 30, 1935, Serial No. 38,548

9 Claims.

My present invention relates to improvements in construction of windows for use in weatherproofing.

In recent years, changes in the design and construction of ofiice buildings and dwellings have included changes in windows which have followed increasingly metal casement types as best adapted to permit an increase in window area and an attractive external and internal appearance.

There has also been increased attention to structural requirements to permit insulation necessary for air conditioning and fuel economy.

These developments have presented certain new problems as well as emphasizing others. One particular source of these problems resulted from the necessity of weatherproofing from the interior which while essentially convenient made the appearance of inner windows of great importance and emphasized the problem of embodying sufficient strength as well. While many attempts have been made to provide structure suitable for screening the interior, these have not been acceptable for use in weatherproofing from the interior because of the appearance and lack of strength of these adaptations.

I have provided a very effective construction that permits the use of storm or auxiliary windows on the interior which are possessed of the desired strength and are, in appearance, in harmony with the general construction and room appointments.

I provide a sash which includes a concealed reenforcement adding sufficient strength to support relatively large panes of glass and as the sash may be disassembled, the replacement of glass may be quickly effected. The sash also includes a recess to receive weatherstrips. Such a sash permits the advantages inherent in double window construction to be fully realized. The installation of storm windows may be easily efiected on a basis permitting storm windows and screens to be easily interchanged.

In the drawing I have shown an illustrative embodiment of my invention with such modifications in structure as I have found permissive. Throughout the drawing and specification like reference characters are employed to designate corresponding parts, and in the drawing:

Fig. l is a view of a typical installation.

Fig. 2 is a fragmentary sectional view generally along the lines 22, of Fig. 1.

Fig. 3 is a fragmentary vertical section of an installed window.

Fig. 4 is a section through the sash.

Fig. 5 is a section of a modified form, and

Fig. 6 is a section of another modification.

In Fig. 1 I have shown a casement window the weatherproofing of which from the interior requires not only the establishment of an adequate dead air space but also the maintenance of the appearance of the window il.

It will be appreciated that I have chosen a casement type of windowas best illustrating the problems involved. It will also be appreciated that the discussion; in certain respects, must be general as the details of each installation are dependent on the actual construction.

I have. indicated by the reference numeral 2 V the window casing by which term I refer not only to the structure around the window, but also to the exposed border around the window aperture. The casing 2 generally includes either a rabbet 3 or permits such a rabbet to be formed. The window sill 4 presents frequently a fiat surface but in many instances is provided with a stool 5 as shown in Fig. 3 or a rabbet like surface 6 may be otherwise provided presenting with the rabbet 3 a continuous surface suitable for sealing.

.The metal casement l is formed in three sections of which the end sections are outswinging. Such windows generally include a plurality of relatively small panes set in framework proportionate therewith.

The weatherproofing of such a window requires that the inner window frame be not only of a width consistent with the sash of the casement window 1, but also that it be in proper alignment therewith so that it preserves the appearance and proportions of the casement window I. As shown in Fig. 1, this may be effected by utilizing large panes l of a size largely determined by the sections of the permanent casement l. The sash for the storm or inner window must be of great strength.

. In Fig. 4 I have shown the details of such a sash. A bar 8 of desired strength and thickness has secured to its front, a metal, strip 9. The nature of the stock used is dependent on the general construction involved and the effect desired, but its width is determined principally by the sash of the casement window I. The strip 9 includes a bent portion [0 parallel with the side of the bar 8 and extending beyond it to define therewith a recess I l.

50 Secured to the rear of the bar 8 is a back strip l2 which, in general, is of the same stock as the front strip 9. The strips 9 and i2 define between them a groove for the border of the panes l and. for suitable gaskets l3. Preferably, the strip I2 extends beyond the bar 8 into the recess II to cooperate in holding felt or other Weatherstripping M in the recess I I.

In order that the exposed surface of the strip 9 may be unmarred, I preferably weld the strip 9 to the bar 8 while the strip I2 is detachably secured to the bar 8 as by screws l5 so that the panes I may be replaced or the gaskets l3 renewed.

In Fig. 6 I have shown a modification in which the outer strip 9a may be of any stock desired as the groove is defined by the strip In which is bent around the reenforcing bar 8. With this modification, a bolt l6 unites the members intoa strong frame.

In Fig. 5, the reenforcing member l'l includes the front member portion Ila and while the resulting frame is less adaptable because of its heavy appearance, it is satisfactory for some installations. V

A sash so constructed is very strong and may be quickly and neatly installed as by use 'of a pivot hinge generally indicated at 18 in Fig. 1

and shown in detail in Fig. 3. A threaded recess I9 is secured to suitable corners of the sash. The pins 20 which carry threads as at 2| are threaded therein to lodge the unthreaded ends in the holes 22 in the casing 2. not show and afford a satisfactory basis for support as screens and storm windows may be readily interchanged from the interior.

As is shown in Figs. 2 and 3,- the Weatherstrip-- of the bent portion In, closing the recess. l I.

It will be noted that pivot hinges l8 are providedin each corner of the middle section to prevent its swinging which, in this illustration, corresponds'to the casement .window I.. Handles 24 are secured to the inswinging storm Windows while the slotted fastenings 25 are secured to the non-swinging middle section.

' While it may be assumed that wherever possible I prefer to have the Weatherstripping l4 bear against a surface at right angles to the panes 1, the preference has its basis in a desire to minimize the wear of the Weatherstripping and to effects its concealment. When no such surfaces are permissible, the sash may be formed to provide a'recess by extending the front plate 9 and the rear plate 12 equally beyond the reenforcement 8.

While I have discussed my novel window sash ance.

What I therefore claim and desire to secure by Letters Patent is:

1. A metal sash having a pane receivingrecess and a Weatherstrip receiving recess; said sash presenting a slender border for the pane and com.-

Such holes do prising front and rear stripsand a concealed reenforcement defining with said strips said recesses and said rear strip and said reenforcemen being detachably united.

2. A metal sash adapted to present a relatively slender border in relation to the pane supported, said sash having a pane receiving recess and a Weatherstrip receiving recess, said sash including a concealed reenforcement of substantially the thickness of the pane to be mounted and an exterior member detachably secured to said reenforcement, said exterior member defining when secured to said reenforcement one of the walls of said pane receiving recess.

- 3. A metalsash adapted to present a relatively slender border in relation to the pane supported, said sash having a pane receiving recess anda Weatherstrip receiving recess disposed at right angles to said first named recess, said sash including a concealed reenforcement of substantially the thickness of the pane to be mounted and an exterior member detachably secured to said reenforcement, said exterior member defining when securedto said reenforcement one of the walls of said pane receiving recess and projecting into said Weatherstrip receiving recess to cooperate in holding the Weatherstrip therein.-

4. A casement adapted to be mounted in sealing relation to planar surfaces of a window casing, said casement including independent sections, each of said sections including a metal sash having a pane receiving recess and a Weatherstrip receiving recess disposed at right angles to said first'named recess and to said surfaces, a flange secured to one ofthe adjacent stiles of adjacent sections'and being formed to provide a surface'in the same plane as said casing surfaces to permit the interstices between sections to be sealed when the recess in said otherstile is provided with Weatherstripping.

5. A casement adapted to be mounted in sealing relation to planar surfaces of a window casing, said'casement including independent sections, each of said sections including a metal sash presenting a slender border in relation to the pane I angles to said first named recess and to said surfaces, said sash including a concealed reenforcement, a'flange secured to one of the adjacent stiles of adjacent sections and being formed to provide a surface in the same plane as said casing surfaces to permit the interstices between sections to be sealed when the recess in said other stile is provided with eatherstripping. V

6. Awindow adapted to be installed within a window casing in spaced relation to a permanent Window and, comprising 'a sash including a front member having a continuous inturned flange along its outer edges and a rear memberspa'ced therefrom andterminating atits outer edge inwardly of said flange and at its inner edge lying flush with the inner edge of the front member, a reinforcement of substantially the thickness of the pane to be mounted between said members and having its outer end lying slightly inward of the outer edge of the rear member to define therewith and with said flange a Weatherstrip receiving recess, and having its inner end lying inwardly of the inner edges of said front and rear members and defining therewith-a pane receiving recess.

7.'A window as described in claim 6- in which one of said sash members is detachably secured to said reinforcement to permit the ready removal and insertion of panes in said pane receiving recess.

8. In combination with a window casing having a window mounted therein and having a continuous rabbet, a window sash mounted in said rabbet toswing inwardly and comprising a front member of desired width relative to the exposed muntins of said window and having a continuous inturned flange, a rear member spaced from said front member and terminating at its outer edge inwardly of said flange and at its inner edge lying flush with the inner edge of said front member, a reinforcement of substantially the thick ness of the pane to be mounted concealed between said members, the outer end thereof lying slight- 1y inward of the outer edge of said rear member and defining therewith and with said flange a recess for Weatherstripping adapted to bear against a surface of said rabbet, and the inner end of said reinforcement lying inwardly of the inner edges of said front and rear members and defining therewith a pane receiving recess, said Weatherstripping when said sash is in closed position being forced against said countersunk portion of said window casing and sealing said casing and sash.

9. In combination with a window casing having a window mounted therein, an inner window comprising a plurality of panels, a sash for each panel, each sash having a pane receiving recess along its inner edges and a Weatherstripping receiving recess outwardly of said pane recess, and means for sealing adjoining window panels comprising a Z-shaped member, the edge of one panel being secured to the outer surface of one arm of said member and the edge of the adjoining panel lying within the second arm thereof when said sash is closed, the Weatherstripping carried by said second panel lying between said panel and said second arm of said member, and locks carried by said panels to hold the same together in said sealed relation.

JOHN K. AMES 

